Home / 136,818.18-188,808.57-76,388.27

Finding the Fourth Proportional to 136,818.18, 188,808.57 and 76,388.27

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Solution

The fourth proportional to 136,818.18, 188,808.57 and 76,388.27 is: 105,415.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,818.18 : 188,808.57 = 76,388.27 : x
  2. Step 2: Convert to fraction form
    136,818.18/188,808.57 = 76,388.27/x
  3. Step 3: Cross multiply
    136,818.18x = 188,808.57 × 76,388.27
  4. Step 4: Simplify right side
    136,818.18x = 14,422,759,079.43
  5. Step 5: Solve for x
    x = 14,422,759,079.43/136,818.18
  6. Step 6: Final answer
    x = 105,415.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.